B6 vs A9 Envelope (US)
| B6 | A9 Envelope (US) | |
|---|---|---|
| Millimetres | 125 × 176 | 146.05 × 222.25 |
| Inches | 4.92 × 6.93 | 5.75 × 8.75 |
| Centimetres | 12.5 × 17.6 | 14.6 × 22.2 |
| Aspect ratio | 1:1.41 | 1:1.52 |
| Area | 220 cm² | 324.6 cm² |
Which is bigger
A9 Envelope (US), by 47.5% in area. A9 Envelope (US) is 21.1 mm wider than B6. A9 Envelope (US) is 46.2 mm taller.
Printing one on the other
A B6 page fits inside A9 Envelope (US) whole — print it at 100% and you get a 10.5 mm border down each side and 23.1 mm top and bottom.
| You want | Set the print scale to | Leaves |
|---|---|---|
| B6 artwork on A9 Envelope (US) paper | 116.8% | 0 × 16.6 mm margin |
| A9 Envelope (US) artwork on B6 paper | 79.2% | 9.3 × 0 mm margin |
These are the numbers for the "custom scale" box in a print dialog. "Fit to page" computes the same thing, but knowing the figure tells you in advance whether the result will look deliberate or accidental.
Why the shapes matter
The proportions differ: B6 is 1:1.41 and A9 Envelope (US) is 1:1.52. That difference is why a layout moved between them never quite lines up — scale it to fit one edge and the other is left with 16.6 mm of unwanted margin.
Frequently asked questions
What is the difference between B6 and A9 Envelope (US)?
B6 is 125 × 176 mm and A9 Envelope (US) is 146.05 × 222.25 mm. A9 Envelope (US) is the larger of the two by 47.5% in area.
Can I print B6 on A9 Envelope (US)?
Yes, at 100% — B6 is smaller on both edges, so it lands inside A9 Envelope (US) with a border all round.
Which is bigger, B6 or A9 Envelope (US)?
A9 Envelope (US) — 146.05 × 222.25 mm against 125 × 176 mm, which is 47.5% more area.
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B6 in full · A9 Envelope (US) in full · All size comparisons · All paper sizes